Disklavier

I purchased the usb Uno by midiman.  I installed the the xp drivers-
it shows successful.  Device manager shows the drivers etc.  The 
nidi files play on my HP laptop but I'm not able to get the in or 
out lights on the Uno to light.  Only the usb light on the Uno 
lights. I'm using the group player.

Any suggestions?

Thanks for te help.
Peter